.side {
    flex-shrink: 0;
    margin-right: 20px;
    width: 280px;
}

.main {
    flex: 1;
    width: 0;
}
.deptItem{
    display: flex;
    align-items: center;
    padding: 3px 0;
    flex: 1;
    width: 0;
}
.deptName{
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
